CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents	$ 190,739	$ 208,802
Short-term investments	741,562	728,898
Restricted cash	889	807
Trade receivables, net	100,965	93,567
Receivables and prepaid expenses	17,343	17,025
Inventories	29,084	24,427
Total current assets	1,080,582	1,073,526
LONG-TERM ASSETS:
Property and equipment, net	25,072	22,693
Field equipment, net	12,792	12,923
Right-of-use assets	19,937	18,267
Other long-term assets	11,827	12,086
Total long-term assets	69,628	65,969
TOTAL ASSETS	1,150,210	1,139,495
CURRENT LIABILITIES:
Trade payables	69,186	72,600
Other payables, lease liabilities and accrued expenses	58,613	70,002
Total current liabilities	127,799	142,602
LONG-TERM LIABILITIES:
Long-term debt, net	563,026	562,216
Deferred revenue	5,511	6,477
Long-term leases	14,813	12,997
Employee benefit liabilities	3,024	4,543
Other long-term liabilities	156	166
Total long-term liabilities	586,530	586,399
TOTAL LIABILITIES	714,329	729,001
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY:
Ordinary shares no par value, unlimited shares authorized; issued and outstanding: 104,559,088 shares and 103,971,263 shares at March 31, 2022 (unaudited) and December 31, 2021, respectively	0	0
Additional paid-in capital	1,127,782	1,099,589
Accumulated other comprehensive income (loss)	(1,328)	(3,169)
Retained earnings (accumulated deficit)	(690,573)	(685,926)
TOTAL SHAREHOLDERS' EQUITY	435,881	410,494
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,150,210	$ 1,139,495